What part of speech is word sentence?

"Sentence" can be different parts of speech depending on how it's used:

* Noun: When referring to a grammatical unit that expresses a complete thought, like: "The dog barked."

* Verb: When referring to the act of passing judgment or condemning someone, like: "The judge sentenced the criminal to ten years."

* Adjective: Less common, but it can describe something that has a definite end point, like: "The sentence was long and drawn-out."

Therefore, without context, it's impossible to definitively say what part of speech "sentence" is.

Can you provide the sentence where you encountered the word?